Guest Stars Dee Bradley Baker voices Stabby Josh Radnor voices Tiny Durpleton Megan Hilty voices Leaftaur Mom Chris Diamantopoulos voices Grasstaur Co Starring Jasper Randall voices Background Vocal Contractor Fletcher Sheridan voices Background Singers Allie Feder voices Background Singers Randy Crenshaw voices Background Singers Baraka May Williams voices Background Singers